gefran VDI100 Series

Motor A
,
s torque characteristics
Motor B
,
s torque characteristics
T
A
T
B
T
A
-T
B
~ 0
Speed
Reference
Speed
Load torque
Torque
Torque
Motor A
,
s torque
characteristics
Load torque
Motor B
,
s torque
characteristics
T
A
-T
B
> > 0
Reference
Speed
Speed
(a) T
A
> T
B
(b) T
A
T
B
- Droop function can be used to approximate the characteristic of a high slippage motor. Set 11-52 to the
percentage of the speed reduction that amounts to 100% of motor torque based on the maximum frequency
(01-02).
- Droop function is disabled when 11-52 is set to 0.0%.
Torque
Speed of Rotation
Synchronous speed
100%
droop amount 11-52 ( slip equivalent )
11-53: Droop control delay
This setting is used adjust the response speed of the droop function. Increase value in case of current oscilla-
tion.
Code Parameter Name / Range
11-54 Output kWHr initialization
0: Do not clear output kWHr
1: Clear output kWHr
Reset kW-hour meter (12-40).
Code Parameter Name / Range
11-55 STOP key selection
0: Stop key is disabled when the operation command is not provided by operator.
1: Stop key is enabled when the operation command is not provided by operator.
11-55= 0: Stop button disabled when operation command is set for terminals (00-02=1) or communication (00-
02=3).
11-55= 1: Stop button enabled
Code Parameter Name / Range
11-56 UP/DOWN selection
0: UP/DOWN reference frequency adjustment with ENTER key.
1: UP/DOWN reference frequency adjustment without ENTER key.
11-56= 0: Changing the reference frequency on the keypad in UP/DOWN control requires the ENTER button to
236 VDI100 • Instruction manual